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Photography


I have been fascinated by photography ever since I was a child. These days I am seldom more than a few metres from a camera. My photographic interests sprawl from artificial intelligence through to vintage zoom lenses. Unsurprisingly, there’s also quite a lot of Linux in the middle. :-) More…



Virtual backdrops and wallpapers
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Virtual backdrops and wallpapers

Freebies to beat those lockdown blues This is a collection of virtual backdrops and wallpapers that you may download, manipulate and enjoy, for free. These images were created by capturing and saving a large number snap-shots of an open source music visualisation application for GNU/Linux called ProjectM – not to be confused with a 2008…

Safer modelling lights for Chinese flash head units
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Safer modelling lights for Chinese flash head units

An interesting question came up a little while back on one of the photography fora to which I belong “I’d be interested in knowing how you swapped the halogen bulbs for LEDs  because I have the same problem and as you say those bulbs are hotter than hell, makes using modelling lights with a grid…

Rescuing a starling trapped in our bird feeder
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Rescuing a starling trapped in our bird feeder

This morning I heard a strange commotion outside the studio window, From the corner of my eye, I could see that the transparent bird feeder appeared to be moving on its own. On close inspection I discovered that the incredibly boisterous and greedy young starlings we have round here had smashed the lid off the…

What is a WebP image file, and how do I open one?
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What is a WebP image file, and how do I open one?

Seems there is quite a lot of buzz about a “new” image format called “WebP”  that is seeing increasing use on-line recently. Although it is attributed to Google, WebP was not strictly a Google invention. It was originally developed by On2 of New York as part of its VP* series “Truemotion” video codecs. Google acquired…

The Big Russian – my MTO 1000 mm catadioptric lens
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The Big Russian – my MTO 1000 mm catadioptric lens

This is by far my largest and longest focal-length lens. Rumour has it that the MTO 1000 mm catadioptric lens was “standard issue” to KGB surveillance operatives during the Cold War Era. MTO itself also has an interesting history. Seems it started out by making the huge glass reflectors for Russian anti-aircraft arc-lights. It made…

A few close-ups with my Fujian 35mm f/1.7 CCTV lens
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A few close-ups with my Fujian 35mm f/1.7 CCTV lens

I treated myelf to a new lens the other day, a Fjujian 35mm F/1.7. This thing has no stop clicks. But it’s astonishingly well-made, of all metal/glass construction and behaves very much like a Victorian Petzval lens. It’s a “C” mount and fits nicely (and fills the frame) on my µ4/3 cameras with a simple…

Cheap but effective continuous studio lighting
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Cheap but effective continuous studio lighting

For continuous lighting, one needs a light source that has good colour balance, uses power efficiently, is reasonably robust and does not present a health or fire risk. I am also a tightwad – interested primarily in “bangs per buck”. Whilst I love new technology, I am not prepared to pay silly money for it….

Converting  inexpensive LED flood lights for use in the studio.
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Converting inexpensive LED flood lights for use in the studio.

This is how I converted three left-over cheapie (£60 for a box of ten, delivered) 20 watt daylight LED flood lights for use in the studio. The basic tools you need:- Vernier or digital caliper, M10 ISO metric taps. Suitable spanner (17mm AF). Bench vice. Electrician’s screwdriver and wire strippers, to make the electrical connections….